Add 30/18 and 16/20
1st number: 1 12/18, 2nd number: 16/20
30/18 + 16/20 is 37/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
30/18 = 30 × 10/18 × 10 = 300/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
16/20 = 16 × 9/20 × 9 = 144/180 - Add the two like fractions:
300/180 + 144/180 = 300 + 144/180 = 444/180 - 444/180 simplified gives 37/15
- So, 30/18 + 16/20 = 37/15
In mixed form: 27/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18+16/20 30/18+32/20 30/36+16/20 30/18+16/40 90/18+16/20 30/18+48/20 30/54+16/20 30/18+16/60 30/18+80/20 30/90+16/20